Provide findAnnotationOnBean variant with allowFactoryBeanInit flag

Closes gh-27796

spring-test/src/main/java/org/springframework/test/web/servlet/setup/StubWebApplicationContext.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -314,6 +314,15 @@ class StubWebApplicationContext implements WebApplicationContext {
 		return this.beanFactory.findAnnotationOnBean(beanName, annotationType);
 	}
 
+	@Override
+	@Nullable
+	public <A extends Annotation> A findAnnotationOnBean(
+			String beanName, Class<A> annotationType, boolean allowFactoryBeanInit)
+			throws NoSuchBeanDefinitionException {
+
+		return this.beanFactory.findAnnotationOnBean(beanName, annotationType, allowFactoryBeanInit);
+	}
+
 
 	//---------------------------------------------------------------------
 	// Implementation of HierarchicalBeanFactory interface